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Yukawa Textures And Horava-Witten M-Theory

R. Arnowitt, B. Dutta

hep-tharXiv:hep-th/0008238

Abstract

The general structure of the matter Kahler metric in the κ2/3 expansion of Horava-Witten M-theory with nonstandard embeddings is examined. It is shown that phenomenological models based on this structure can lead to Yukawa and V CKM hierarchies (consistent with all data) without introducing ad hoc small parameters if the 5-branes lie near the distant orbifold plane and the instanton charges of the physical plane vanish. M-theory thus offers an alternate way of describing these hierarchies, different from the conventional models of Yukawa textures.

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